msycamore said:

... I just discovered (at least on my disc) that the English 2.0 Surround track isn't surround encoded at all, it's a plain 2.0 stereo track, can you please check the 2.0 track on your '99 release Jonno, want to know if it's just my disc that's faulty.

Keep in mind that the Surround property of an AC3 stream is purely a flag to tell the decoder to switch to Dolby Pro-logic decoding mode. The audio may well contain matrixed surround information but be missing the flag, if you force Pro-logic decoding you should be able to hear if there are rear channels in the mix.